County Road 715 begins on the west side of Trondheim at a roundabout at the end of the Ilsvik Tunnel.

Proceeding generally northwestward, the road parallels the southernmost shore of the lake Storvatnet before meeting County Road 718 in a T-intersection.

The road then becomes the right branch of the "T" and runs northeast through the valley of the Skaua, crossing from the left to right bank of the Skaua before turning northward until it reaches Åfjord.

From Åfjord, Route 715 branches off to the right and parallels the Norddaselva and Hofstaddalsselva rivers before reaching the shore of the Norwegian Sea west of Steinsdalen.

Passing through Steinsdalen, the road follows the valley of the Luna river eastward and crosses two branches of the Øysterelva river before ending at County Road 17 at a T-intersection upstream from Sjøasen.